Last night I took all my frag plugs out and found tons of tiny bugs. Can't get a picture. They are brown and have a hard shell. Not snails. Almost like a tiny sand flea.
Flat worms are brownish in color. They are almost square looking and very flat. They are about half the size of a grain of sand. I had them in the 18 gallon couple years back. Six line wrasse took care of it in about 2 weeks.
tried posting a link but pulled the wrong thing up.
Edit: Look up <span style="font-family: verdana"> Rust Brown Flatworm (or</span><span style="font-family: verdana"> Convolutriloba retrogemma) and see if that is it.
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No they are lightbrown with a dark brown lines on the back of them. If one of you guys text me from the number I posted I'll send a picture and you can I'd and post it. I'm at work and can't from my phone